[PyQt] QLabel is visible but isVisible() is always false

[K.Wegner at herts.ac.uk]

Hi,

I have a QLabel that is not visible at the beginning (setVisible(0)) and 
after a while it becomes visible (setVisible(1) and I can see it in the 
dialog now). If I check the property isVisible(), I always receive False=0, 
although it is visible.

Thanks for any help in advance,
Katja